Full-automatic liquid taking machine

The fully automatic liquid dispensing machine uses a triaxial linear module and a liquid dispensing gun mechanism in conjunction with a vision camera to solve the problems of high manual labor intensity and environmental pollution in the fields of chemical, food, and pharmaceutical industries, and realizes an automated and residue-free liquid dispensing process.

CN121869790APending Publication Date: 2026-04-17GUANGZHOU ZHUJU TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU ZHUJU TECH CO LTD
Filing Date
2023-12-07
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

In fluid industrial production such as chemical, food, and pharmaceutical industries, existing technologies suffer from problems such as high manual labor intensity, serious environmental pollution, large residual liquid in the tank, and low work efficiency.

Method used

A fully automatic liquid dispensing machine was designed, which uses a liquid dispensing gun mechanism with a triaxial linear module and a vision camera to achieve automatic opening and closing of the cap, automatic port finding and quantitative liquid dispensing. Combined with the internal and external tube switching structure and exhaust gas treatment system, it ensures that the liquid is completely extracted and there is no environmental pollution.

Benefits of technology

It achieves fully automated liquid extraction without human intervention, reducing the labor intensity of operators, improving work efficiency, reducing the amount of residue in the tank, and avoiding environmental pollution.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of barreled liquid taking, and discloses a full-automatic liquid taking machine which comprises a closed shell, an electronic scale is fixedly installed at the bottom of the interior of the closed shell, a liftable conveying belt is fixedly installed at the top of the exterior of the electronic scale, and a three-axis linear module is arranged in the middle of the interior of the closed shell; a liquid taking gun mechanism is fixedly installed at the movable end of the three-axis linear module, a cap screwing mechanism located on one side of the liquid taking gun mechanism is fixedly installed at the movable end of the three-axis linear module, a conveying pipe is fixedly installed at the top of the liquid taking gun mechanism, and a liquid outlet pipe is fixedly installed at the other end of the conveying pipe; and a liquid taking outlet valve is fixedly installed at the other end of the liquid outlet pipe, and a visual camera is fixedly installed at the top of the interior of the closed shell. According to the full-automatic liquid taking machine, automatic cover opening and closing, automatic opening searching and automatic quantitative liquid taking are achieved, full-automatic liquid taking operation is achieved, manual intervention is not needed, and the purpose of reducing labor intensity is achieved.
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Description

Technical Field

[0001] This invention relates to the field of liquid dispensing technology for bottled liquids, specifically a fully automatic liquid dispensing machine. Background Technology

[0002] In fluid industrial production such as chemical, food, and pharmaceutical manufacturing, large quantities of bottled liquid raw materials, additives, and auxiliaries need to be pumped into the production system. Currently, this is done manually by holding the dispensing gun or by operating a semi-automatic dispensing device. Bottled liquids are typically 200L in size, and four bottles are usually placed on a pallet and sent to the dispensing station. In the manual dispensing method, the bottle cap is opened manually, and the dispensing gun is inserted through the bottle opening to the bottom of the bottle for pumping. During the dispensing process, the operator needs to frequently observe the weighing device and adjust the dispensing gun to avoid inaccurate dispensing. Advanced dispensing systems now offer semi-automatic dispensing. In semi-automatic dispensing devices, the dispensing gun is inserted into the bottle by manually finding the opening and opening the cap. A bottom weighing device and automatic control then achieve quantitative dispensing. After dispensing, the cap is manually closed.

[0003] Manual liquid extraction is physically demanding for operators, and even in semi-automatic extraction, operators need to frequently operate the extraction device at close range. The workload of manually searching for the opening and closing the lid is also considerable. In addition, the odor emitted from the liquid inside the tank during operation can pollute the environment and affect the physical and mental health of the operators, leading to some resistance. Manual extraction can basically empty the liquid in the tank by manually tilting it, but in the four-tank semi-automatic extraction process, it is currently impossible to empty the liquid in the tank completely by tilting or other methods, resulting in a residual amount of more than 2 kg in the tank, causing significant waste.

[0004] Therefore, we propose a fully automated liquid dispensing machine. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, the present invention provides the following technical solution: a fully automatic liquid dispensing machine, comprising a closed shell, an electronic scale fixedly installed at the bottom inside the closed shell, a liftable conveyor belt fixedly installed at the top outside the electronic scale, a triaxial linear module arranged in the middle inside the closed shell, a liquid dispensing gun mechanism fixedly installed at the movable end of the triaxial linear module, a capping mechanism located on one side of the liquid dispensing gun mechanism fixedly installed at the movable end of the triaxial linear module, a conveying pipe fixedly installed at the top of the liquid dispensing gun mechanism, a liquid outlet pipe fixedly installed at the other end of the conveying pipe, a liquid dispensing outlet valve fixedly installed at the other end of the liquid outlet pipe, and a vision camera fixedly installed at the top inside the closed shell.

[0006] Preferably, a pallet is fixedly placed on the top of the liftable conveyor belt, and a material bucket is fixedly placed on the top of the pallet, wherein the four material buckets are 200L buckets.

[0007] Preferably, the liquid dispensing gun mechanism includes an outer liquid dispensing tube and an inner liquid dispensing tube. The outer liquid dispensing tube is sleeved outside the inner liquid dispensing tube. An outer liquid dispensing port is integrally connected to one side of the top of the outer liquid dispensing tube, and an inner liquid dispensing port is integrally connected to one side of the top of the inner liquid dispensing tube. The outer liquid dispensing port and the inner liquid dispensing port are fixedly installed to the delivery pipe through a flexible tube. The connection method between the liquid dispensing gun mechanism and the delivery pipe can also be a single-valve sleeve type and a double-valve sleeve type.

[0008] Preferably, the single-valve sleeve-type liquid dispensing gun mechanism includes a liquid dispensing outer tube and a liquid dispensing inner tube. The liquid dispensing outer tube is sleeved outside the liquid dispensing inner tube. A liquid outlet is integrally connected to one side of the top of the liquid dispensing outer tube. The top of the liquid dispensing inner tube is fixedly installed with the top of the liquid outlet. A single-tube liquid dispensing valve is fixedly installed in the middle of the liquid outlet. The single-tube liquid dispensing valve is located between the end of the liquid dispensing inner tube and the top of the liquid dispensing outer tube. The liquid outlet is fixedly installed with the delivery pipe.

[0009] Preferably, the dual-valve sleeve-type liquid dispensing gun mechanism includes an outer liquid dispensing tube and an inner liquid dispensing tube. The outer liquid dispensing tube is sleeved outside the inner liquid dispensing tube. An outer liquid dispensing valve is fixedly installed at the liquid dispensing port of the outer tube, and an inner liquid dispensing valve is fixedly installed at the liquid dispensing port of the inner tube. The outer liquid dispensing port and the inner liquid dispensing port are fixedly installed with the delivery tube.

[0010] Preferably, a first pipeline switching valve is fixedly installed at the connection between the outlet pipe and the delivery pipe, a connecting pipe is fixedly installed at the top of the middle part of the outlet pipe, a second pipeline switching valve is fixedly installed at the connection between the connecting pipe and the outlet pipe, and the top of the connecting pipe is provided with two connection ports.

[0011] Preferably, a cleaning pipeline valve is fixedly installed at one connection port at the top of the connecting pipe, and a backflush pipeline valve is fixedly installed at the other connection port at the top of the connecting pipe, located above the cleaning pipeline valve.

[0012] Preferably, an exhaust gas pipeline valve is fixedly installed on the top inside the enclosed housing.

[0013] Preferably, the bottom of the outer liquid-collecting tube is flush with the bottom of the inner liquid-collecting tube, and the top of the inner liquid-collecting tube extends to the top of the outer liquid-collecting tube.

[0014] Preferably, five vision cameras are fixedly installed at the top inside the enclosed housing, and the five vision cameras are respectively fixedly installed at the four corners and the middle of the top of the enclosed housing.

[0015] Beneficial effects

[0016] Compared with the prior art, the present invention provides a fully automatic liquid dispensing machine, which has the following beneficial effects:

[0017] 1. This fully automatic liquid dispensing machine uses a three-axis linear module to drive the dispensing gun mechanism and the capping mechanism, which work in conjunction with five vision cameras to move. The capping mechanism opens the lid of the material container, and then the dispensing gun mechanism extends into the material container to extract the material. This achieves automatic lid opening and closing, automatic port finding, and automatic quantitative liquid dispensing, realizing fully automatic liquid dispensing operation without manual intervention. This reduces labor intensity and solves the problem of upstream and downstream disconnect in the liquid dispensing and material extraction process in intelligent manufacturing. While solving the liquid dispensing problem for four containers, it can also meet the liquid dispensing needs of ton containers, improving work efficiency and applicability.

[0018] 2. This fully automatic liquid dispensing machine, through the setting of a liquid dispensing gun mechanism, and the cooperation of the liquid dispensing outer tube and liquid dispensing inner tube structure and liquid dispensing valve, can achieve the complete removal of residual liquid in the tank. When there is little liquid left in the tank, the ordinary single-tube liquid dispensing gun has a large tube diameter, and a small amount of liquid cannot be filled into the inner cavity by suction, thus failing to remove the liquid. The remaining liquid is extracted through the liquid dispensing inner tube with a smaller diameter, achieving the purpose of switching between inner and outer tubes for liquid dispensing, removing residual material, and quantitative liquid dispensing.

[0019] 3. This fully automatic liquid extractor uses a closed casing to collect the gases emitted during the liquid extraction process. The exhaust gas generated during the liquid extraction process is collected to the waste gas treatment system through the exhaust gas pipeline valve to avoid environmental pollution. At the same time, it is equipped with backflush pipeline valve, cleaning pipeline valve, first pipeline switching valve, second pipeline switching valve, and supply of purging gas and cleaning fluid to achieve purging and cleaning of the liquid extraction pipeline after the liquid extraction is completed. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0021] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of the cannula-type liquid dispensing gun of the present invention;

[0024] Figure 5 This is a schematic diagram of the single-valve sleeve-type liquid dispensing gun of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the dual-valve sleeve-type liquid dispensing gun of the present invention.

[0026] In the diagram: 1. Enclosed outer casing; 2. Electronic scale; 3. Liftable conveyor belt; 4. Pallet; 5. Material bucket; 6. Triaxial linear module; 7. Liquid dispensing gun mechanism; 71. Outer liquid dispensing tube; 72. Inner liquid dispensing tube; 73. Liquid outlet; 74. Single-tube liquid dispensing valve; 75. Inner tube liquid dispensing port; 76. Inner tube liquid dispensing valve; 77. Outer tube liquid dispensing port; 78. Liquid dispensing valve; 8. Capping mechanism; 9. Conveying pipe; 10. First pipeline switching valve; 11. Liquid outlet pipe; 12. Liquid dispensing outlet valve; 13. Connecting pipe; 14. Second pipeline switching valve; 15. Cleaning pipeline valve; 16. Backflush pipeline valve; 17. Exhaust gas pipeline valve; 18. Vision camera. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1 to 6 The fully automatic liquid dispensing machine includes a closed casing 1. An electronic scale 2 is fixedly installed at the bottom inside the closed casing 1. A lifting conveyor belt 3 is fixedly installed at the top outside the electronic scale 2. A triaxial linear module 6 is located in the middle inside the closed casing 1. A liquid dispensing gun mechanism 7 is fixedly installed at the movable end of the triaxial linear module 6. A capping mechanism 8 located on one side of the liquid dispensing gun mechanism 7 is fixedly installed at the movable end of the triaxial linear module 6. A conveying pipe 9 is fixedly installed at the top of the liquid dispensing gun mechanism 7. A liquid outlet pipe 11 is fixedly installed at the other end of the conveying pipe 9. A liquid dispensing outlet valve 12 is fixedly installed at the other end of the liquid outlet pipe 11. A vision camera 18 is fixedly installed on the top inside. A three-axis linear module 6 drives the liquid dispensing gun mechanism 7 and the capping mechanism 8 to move in conjunction with five vision cameras 18. The capping mechanism 8 opens the lid of the material tank 5, and then the liquid dispensing gun mechanism 7 extends into the material tank 5 to extract the material. This realizes automatic lid opening and closing, automatic port finding, and automatic quantitative liquid dispensing, achieving fully automatic liquid dispensing operation without manual intervention. This reduces labor intensity and solves the problem of upstream and downstream disconnect in the liquid dispensing and material extraction process in intelligent manufacturing. It can solve the liquid dispensing problem of four tanks and also meet the liquid dispensing needs of ton tanks, improving work efficiency and applicability.

[0029] In one embodiment of the present invention, a pallet 4 is fixedly placed on the top of the lifting conveyor belt 3, and a material bucket 5 is fixedly placed on the top of the pallet 4. The four material buckets 5 are 200L buckets.

[0030] As one embodiment of the present invention, the liquid dispensing gun mechanism 7 includes an outer liquid dispensing tube 71 and an inner liquid dispensing tube 72. The outer liquid dispensing tube 71 is sleeved outside the inner liquid dispensing tube 72. An outer tube liquid dispensing port 77 is integrally connected to one side of the top of the outer liquid dispensing tube 71. An inner tube liquid dispensing port 75 is integrally connected to one side of the top of the inner liquid dispensing tube 72. The outer tube liquid dispensing port 77 and the inner tube liquid dispensing port 75 are fixedly installed to the delivery pipe 9 through a flexible tube. The connection method between the liquid dispensing gun mechanism 7 and the delivery pipe 9 can also be a single valve sleeve type and a double valve sleeve type.

[0031] As one embodiment of the present invention, the single-valve sleeve-type liquid dispensing gun mechanism 7 includes a liquid dispensing outer tube 71 and a liquid dispensing inner tube 72. The liquid dispensing outer tube 71 is sleeved outside the liquid dispensing inner tube 72. A liquid outlet 73 is integrally connected to one side of the top of the liquid dispensing outer tube 71. The top of the liquid dispensing inner tube 72 is fixedly installed with the top of the liquid outlet 73. A single-tube liquid dispensing valve 74 is fixedly installed in the middle of the liquid outlet 73. The single-tube liquid dispensing valve 74 is located between the end of the liquid dispensing inner tube 72 and the top of the liquid dispensing outer tube 71. The liquid outlet 73 is fixedly installed with the delivery pipe 9.

[0032] As one embodiment of the present invention, the dual-valve sleeve-type liquid dispensing gun mechanism 7 includes an outer liquid dispensing tube 71 and an inner liquid dispensing tube 72. The outer liquid dispensing tube 71 is sleeved outside the inner liquid dispensing tube 72. An outer liquid dispensing valve 78 is fixedly installed at the outer tube dispensing port 77, and an inner liquid dispensing valve 76 is fixedly installed at the inner tube dispensing port 75. The outer liquid dispensing port 77 and the inner liquid dispensing port 75 are fixedly installed with the delivery pipe 9. By setting up the liquid dispensing gun mechanism 7 and selecting one of the three connection methods as needed, the liquid dispensing gun mechanism 7 achieves the complete removal of residual liquid in the bucket through the cooperation of the structure of the outer liquid dispensing tube 71 and the inner liquid dispensing tube 72 and the dispensing valve. When there is little liquid remaining in the bucket, the diameter of the ordinary single-tube liquid dispensing gun is large, and a small amount of liquid cannot be filled into the inner cavity by suction, resulting in the inability to remove the liquid. The remaining liquid is extracted through the smaller diameter inner liquid dispensing tube 72, achieving the purpose of switching between the inner and outer tubes for liquid dispensing, removing residual material, and quantitative liquid dispensing.

[0033] In one embodiment of the present invention, a first pipeline switching valve 10 is fixedly installed at the connection between the outlet pipe 11 and the delivery pipe 9, a connecting pipe 13 is fixedly installed at the top of the middle part of the outlet pipe 11, a second pipeline switching valve 14 is fixedly installed at the connection between the connecting pipe 13 and the outlet pipe 11, and two connection ports are provided at the top of the connecting pipe 13.

[0034] In one embodiment of the present invention, a cleaning pipeline valve 15 is fixedly installed at one connection port at the top of the connecting pipe 13, and a backflush pipeline valve 16 is fixedly installed at the other connection port at the top of the connecting pipe 13, located above the cleaning pipeline valve 15. The backflush pipeline valve 16, the cleaning pipeline valve 15, the first pipeline switching valve 10, the second pipeline switching valve 14, and the supply of purging gas and cleaning liquid are provided to achieve purging and cleaning of the liquid extraction pipeline after the liquid extraction is completed.

[0035] As one embodiment of the present invention, an exhaust gas pipeline valve 17 is fixedly installed on the top inside the closed housing 1. By setting up the closed housing 1, the gas emitted during the liquid extraction process is collected in a concentrated manner, and the exhaust gas generated during the liquid extraction process is collected to the waste gas treatment system through the exhaust gas pipeline valve 17 to avoid environmental pollution.

[0036] In one embodiment of the present invention, the bottom of the liquid-collecting outer tube 71 is flush with the bottom of the liquid-collecting inner tube 72, and the top of the liquid-collecting inner tube 72 extends through to the top of the liquid-collecting outer tube 71.

[0037] In one embodiment of the present invention, five vision cameras 18 are fixedly installed on the top inside the closed housing 1, and the five vision cameras 18 are respectively fixedly installed at the four corners and the middle of the top of the closed housing 1.

[0038] It should be noted that during use, the three-axis linear module 6 drives the liquid-collecting gun mechanism 7 and the capping mechanism 8 to move in conjunction with five vision cameras 18. The capping mechanism 8 opens the lid of the material tank 5, and then the liquid-collecting gun mechanism 7 is inserted into the material tank 5 to extract the material. When the liquid inside the material tank 5 is low, the vertical axis servo force feedback signal accurately positions the liquid-collecting gun head to the bottom of the material tank 5. The remaining liquid is extracted through the smaller diameter liquid-collecting inner tube 72, achieving the purpose of switching between inner and outer tubes for liquid collection, removing the remaining material, and quantitative liquid collection. The closed shell 1 collects the gas emitted during the liquid collection process and collects the exhaust gas generated during the liquid collection process to the waste gas treatment system through the exhaust gas pipeline valve 17 to avoid environmental pollution. At the same time, a backflush pipeline valve 16, a cleaning pipeline valve 15, a first pipeline switching valve 10, a second pipeline switching valve 14, and a supply of purging gas and cleaning liquid are set up to achieve purging and cleaning of the liquid collection pipeline after the liquid collection is completed.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully automatic liquid dispensing machine, comprising a closed outer casing (1), characterized in that: An electronic scale (2) is fixedly installed at the bottom inside the enclosed shell (1). A liftable conveyor belt (3) is fixedly installed at the top outside the electronic scale (2). A triaxial linear module (6) is provided in the middle inside the enclosed shell (1). A liquid dispensing gun mechanism (7) is fixedly installed at the movable end of the triaxial linear module (6). A capping mechanism (8) located on one side of the liquid dispensing gun mechanism (7) is fixedly installed at the movable end of the triaxial linear module (6). A delivery pipe (9) is fixedly installed at the top of the liquid dispensing gun mechanism (7). A liquid outlet pipe (11) is fixedly installed at the other end of the delivery pipe (9). A liquid dispensing outlet valve (12) is fixedly installed at the other end of the liquid outlet pipe (11). A vision camera (18) is fixedly installed at the top inside the enclosed shell (1).

2. The fully automatic liquid dispensing machine according to claim 1, characterized in that: A pallet (4) is fixedly placed on the top of the liftable conveyor belt (3), and a material bucket (5) is fixedly placed on the top of the pallet (4). The four material buckets (5) are 200L buckets.

3. The fully automatic liquid dispensing machine according to claim 1, characterized in that: The liquid dispensing gun mechanism (7) includes an outer liquid dispensing tube (71) and an inner liquid dispensing tube (72). The outer liquid dispensing tube (71) is sleeved outside the inner liquid dispensing tube (72). An outer tube dispensing port (77) is integrally connected to one side of the top of the outer liquid dispensing tube (71). An inner tube dispensing port (75) is integrally connected to one side of the top of the inner liquid dispensing tube (72). The outer tube dispensing port (77) and the inner tube dispensing port (75) are fixedly installed to the delivery tube (9) through a flexible tube. The connection method between the liquid dispensing gun mechanism (7) and the delivery tube (9) can be either a single-valve sleeve type or a double-valve sleeve type.

4. The fully automatic liquid dispensing machine according to claim 3, characterized in that: The single-valve sleeve-type liquid dispensing gun mechanism (7) includes an outer liquid dispensing tube (71) and an inner liquid dispensing tube (72). The outer liquid dispensing tube (71) is sleeved outside the inner liquid dispensing tube (72). A liquid outlet (73) is integrally connected to one side of the top of the outer liquid dispensing tube (71). The top of the inner liquid dispensing tube (72) is fixedly installed with the top of the liquid outlet (73). A single-tube liquid dispensing valve (74) is fixedly installed in the middle of the liquid outlet (73). The single-tube liquid dispensing valve (74) is located between the end of the inner liquid dispensing tube (72) and the top of the outer liquid dispensing tube (71). The liquid outlet (73) is fixedly installed with the delivery tube (9).

5. The fully automatic liquid dispensing machine according to claim 3, characterized in that: The dual-valve sleeve-type liquid dispensing gun mechanism (7) includes an outer liquid dispensing tube (71) and an inner liquid dispensing tube (72). The outer liquid dispensing tube (71) is sleeved outside the inner liquid dispensing tube (72). An outer liquid dispensing valve (78) is fixedly installed at the outer liquid dispensing port (77), and an inner liquid dispensing valve (76) is fixedly installed at the inner liquid dispensing port (75). The outer liquid dispensing port (77) and the inner liquid dispensing port (75) are fixedly installed with the delivery tube (9).

6. The fully automatic liquid dispensing machine according to claim 1, characterized in that: A first pipeline switching valve (10) is fixedly installed at the connection between the outlet pipe (11) and the delivery pipe (9). A connecting pipe (13) is fixedly installed at the top of the middle part of the outlet pipe (11). A second pipeline switching valve (14) is fixedly installed at the connection between the connecting pipe (13) and the outlet pipe (11). The top of the connecting pipe (13) is provided with two connection ports.

7. The fully automatic liquid dispensing machine according to claim 6, characterized in that: A cleaning pipeline valve (15) is fixedly installed at one connection port at the top of the connecting pipe (13), and a backflush pipeline valve (16) is fixedly installed at the other connection port at the top of the connecting pipe (13) above the cleaning pipeline valve (15).

8. The fully automatic liquid dispensing machine according to claim 1, characterized in that: An exhaust gas pipeline valve (17) is fixedly installed on the top inside the enclosed shell (1).

9. The fully automatic liquid dispensing machine according to claim 3, characterized in that: The bottom of the outer liquid collection tube (71) is flush with the bottom of the inner liquid collection tube (72), and the top of the inner liquid collection tube (72) extends through to the top of the outer liquid collection tube (71).

10. The fully automatic liquid dispensing machine according to claim 1, characterized in that: Five vision cameras (18) are fixedly installed on the top inside the enclosed shell (1), and the five vision cameras (18) are fixedly installed at the four corners and the middle of the top of the enclosed shell (1).